paw1 Member Member since Mar 26, 2010 Last active Mar 29, 2010 Total activities 0 Activity feed Recent contributions #Threads 15 years ago ee3541fc-2798-4d0e-97aa-86dc53a5bda4 Hi, (new here) Just one question, why, while designing the impeller, was the direction of rotation (relative to the involute) chosen as...